HIGH
CVE-2015-8387
CWE-190Published: December 2, 2015· Updated: Jun 17, 2026
7.3
CVSS v3.1
Official Description
PCRE before 8.38 mishandles (?123) subroutine calls and related subroutine calls, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.
Technical Analysis
CVE-2015-8387 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (16)
→
→
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupBroken Link · Release Notes
→
http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/82990Third Party Advisory · VDB Entry
→
https://bto.bluecoat.com/security-advisory/sa128Third Party Advisory
→
→
https://security.gentoo.org/glsa/201607-02Third Party Advisory
→
→
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupBroken Link · Release Notes
→
http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/82990Third Party Advisory · VDB Entry
→
https://bto.bluecoat.com/security-advisory/sa128Third Party Advisory
→
→
https://security.gentoo.org/glsa/201607-02Third Party Advisory
Quick Facts
CVE IDCVE-2015-8387
CVSS Score7.3 / 10
SeverityHIGH
WeaknessCWE-190
CISA KEVNo
Affected3 vendor(s)
PublishedDec 2, 2015
Related CVEs (CWE-190)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-8387 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.